Fix a bug that would cause subzero to fail when --threads=0.

src/IceTranslator.cpp

Index: src/IceTranslator.cpp
diff --git a/src/IceTranslator.cpp b/src/IceTranslator.cpp
index c78bbcb02563e0ac890a825827871c1aabe13515..aba71e58fc9afd945b962db517c835da0b76c87f 100644
--- a/src/IceTranslator.cpp
+++ b/src/IceTranslator.cpp
@@ -57,16 +57,6 @@ void Translator::translateFcn(std::unique_ptr<Cfg> Func) {
   Ctx->optQueueBlockingPush(std::move(Func));
 }
 
-void Translator::emitConstants() {
-  if (!getErrorStatus())
-    TargetDataLowering::createLowering(Ctx)->lowerConstants();
-}
-
-void Translator::transferErrorCode() const {
-  if (getErrorStatus())
-    Ctx->getErrorStatus()->assign(getErrorStatus().value());
-}
-
 void Translator::lowerGlobals(
     std::unique_ptr<VariableDeclarationList> VariableDeclarations) {
   EmitterWorkItem *Item = new EmitterWorkItem(getNextSequenceNumber(),